Piston-groove-cleaning tool



:ron M; Bowman, or rrr'roiv. Iowa.

PlSTON-Gi-ROOVE-CLEANING TOOL. j

Specification of Letters'atent. @migrante/d 'Ninn 15921.

Application filed` October 18, 1920. Serial No. 417,674.

` To czZZcoLo/m t 'may concern.'

Be it known that l, Jon M. BOWMAN, a citizen of the United States, residing at Tipton, iii the county of Cedar and State of Iowa, have invented certain new and useful improvements in a PistoniGrooveCleaning Tool, of which the following is a specification.

This invention relates to tools, and more particularly to cleaning tools for piston` grooves.

The object of the invention is to provide a simply constructed and efficient tool of this character for conveniently removing carbon deposits from the walls of the piston ring receiving grooves in explosive engine pistons.

Another object is to so construct a tool of this character that it may be used for cleaning the groovesof pistons of varying sizes without necessitating change in the parts of the tool.

Another object is to provide a tool of this character having adjustable guiding and retaining means to adapt the tool for use with pistons of different sizes.

With these and other objects in view, the invention consists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention.

ln the accompanying drawings;

Figure l represents a plan view of a tool constructed in accordance with this invention shown applied the piston being indicated by dotted lines.y

Fig. 2 is a side elevation thereof.

3 is a similar view with parts broken out and in section.

Fig. 4 is a detailed perspective view of the retaining band, and

Fig. 5 is a similar view of the tool proper removed from its mounting.

ln the embodiment illustrated, a handle l is shown tapered toward its inner end and provided at said end with an arcuate head 2. the concave of which faces outward. Reinforcing ribs 3 are mounted at the junction of said head with the handle, the head and ribs being preferably cast integral with the handle.

The handle l is provided at its inner end with a longitudinally extending socket 4 which opens through the head 2 and is designed to receive the shank 6 of the cleaning tool 5. This tool isin the form ofa substantially l.shaped member, the `cleaner proper, 7, of which constitutes the short arm of the member and one side thereof is made' continuous with the shank 6` while the reinainder projects laterally relativev to said shank. rlChistool is adjustablymounted in the socket 4 ofthe handle andis held in adjusted position by a set screw QeXtending transversely through the handle and engaging the shank of the tool.

Mounted on the `head 2 yis a retaining band 10 which is of slightly greater lengththany a true semi-circle and is detachably secured at its medial portion to the concave face of the head by screws l1, the heads of which are arranged flush with the outer faces of the band 10. This band 10 is formed ofre. silient materialto facilitate its application to a piston, permitting the terminals' of the band to be sprung apart which is necessary in placing the tool in position upon the piston. j

engage the ends of the retaining vband l() to 8() rlhumb screws 12 are carried by the ends j of the arcuate Vhead 2 and are designed to adjust them laterally toward andaway from the piston so that the tool may be used in connection with pistons of varying sizes,.it being especially designed for use in connec# tion with pistons varying from Zitto 4 f inches. The difference in the curve of the Y tool proper 7 is so slight that it may be used on pistons of the above specified sizes.

The shank 6 of the tool 5 is offsetslightly from the true center of tlieliandle preferably about slgnd of an inch and by constructing the tool in the shape above desoribed,it presents a true faceto'the grooves of the pistons for the sizes above set forth. it being reversible to adapt it for use with such pistons. v

In the use of the tool the cleaning or scraping element 5 which is of a width to prop-r yeilv i'it the groove in the piston to be cleaned,

has the shank thereof inserted in the socket of the handle and the retaining band l() is adjusted through the set screws 12 adapted for use in connection with the piston to be cleaned` When so adjusted the handle l is swung back and forth over theipiston and the retaining band 10 maintains the tool in position, and in addition, tends to draw the scraping or cleaning element 5 into the pif*- ton groove, thereby maintaining the scraping edges of said tool in engagement with the walls of the groove vwith, suiicient presT o sure to insure proper scraping and cleaning of the groove.

Thepreferred embodiment of the inven# tion is Ldisclosed in thedravvings and set forth inthe specilication, but it will be understood that `any modifications Within the scope of the claims may be made in the construction Without departing from the principle of the vinvention or sac'ricingany of its advantages,

I claim: j f v 1. A tool of the class described comprising a handle, a resilient split clamping band secured to one end of said handle and adapted to partially encircle a piston or cylinder and'having'an openingtherein, the handle having a socket communicating with said opening, a cleaning toolhaving a shank in- -sertible through the openings in the band and handle and means, for securing said .shank to said handle.

2. A tool of the class described, comprising a handle having anarcuate head at one end and a socket extending longitudinally inWardrand opening through said head, a resilient split clamping band secured to said iead at the medial portion thereof and having an opening communicating with the socket in said handle, a cleaning tool having a shank insertible through the openings in the band and head and adapted to enter the socket in the handle, and means for adjustably-securing said shank in said handle.

3. .A tool of the class described, comprisingl a handle having an arcuate head at one end Withv a socket extending longitudinally `inwardly and opening through said head,

retaining means carried by said head, and a substantially L-shaped cleaning tool having one arin mounted in said handle, the outer face of the tool being concave.

Y. In testimony whereof, I affix my signature hereto.

JOE M. BOVVMAN. 

